T. O. Sunmonu and A. J. Afolayan, “Evaluation of Polyphenolic Content and Antioxidant Activity of Artemisia afra Jacq. Ex Willd. Aqueous Extract”, Pak. J. Nutr., vol. 11, no. 7, pp. 618–623, Jun. 2012, doi: 10.3923/pjn.2012.618.623.